# Measurement of the B<inf>s</inf><sup>0</sup>→J/ψη lifetime

Aaij, R, Adeva, B, Adinolfi, M, Ajaltouni, Z, Akar, S, Albrecht, J, Alessio, F, Alexander, M, Ali, S, Alkhazov, G
et al (show 90 more authors) (2016) Measurement of the B<inf>s</inf><sup>0</sup>→J/ψη lifetime. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 762. 484 - 492.

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## Abstract

Using a data set corresponding to an integrated luminosity of 3 fb−1, collected by the LHCb experiment in pp collisions at centre-of-mass energies of 7 and 8 TeV, the effective lifetime in the Bs0→J/ψη decay mode, τeff, is measured to beτeff=1.479±0.034 (stat)±0.011 (syst) ps. Assuming CP conservation, τeff corresponds to the lifetime of the light Bs0 mass eigenstate. This is the first measurement of the effective lifetime in this decay mode.

Item Type: Article Symplectic Admin 01 Dec 2016 11:33 24 Oct 2021 07:14 10.1016/j.physletb.2016.10.006 https://arxiv.org/abs/1607.06314v1 https://livrepository.liverpool.ac.uk/id/eprint/3004715